JEE Main physics practice questions by section

Original questions for all ten sections, Section A multiple choice and Section B numerical value, each with a full worked solution.

Section A practice	Multiple choice, worked or timed
Section B practice	Type one integer, checked at once
Solutions	Every step, and why each wrong option is wrong

Try 4 questions

Question 1Section A: multiple choice

5\ \mathrm{kg}

block is pulled up a rough incline at

37^\circ

to the horizontal by a force of

60\ \mathrm{N}

parallel to the incline. The coefficient of kinetic friction is

0.25

. Take

g

= 10\ \mathrm{m\,s^{-2}}

\sin 37^\circ

= 0.6

and

\cos 37^\circ

= 0.8

. What is the block's acceleration up the incline?

Question 2Section A: multiple choice

Two rigid, sealed containers are in thermal contact through a thin conducting wall, and the pair is insulated from everything else. One holds

3

moles of helium at

250\ \mathrm{K}

; the other holds

1

mole of oxygen at

600\ \mathrm{K}

. Both gases are ideal and the oxygen has no vibrational motion. What common temperature do they reach?

Question 3Section A: multiple choice

8.0\ \Omega

resistor and a capacitor are in series across a source whose voltage is

v

= 10 + 20\sin\omega t

volts. At this angular frequency the capacitor's reactance is

6.0\ \Omega

. Once steady conditions are reached, what average power is dissipated in the resistor?

Question 4Section A: multiple choice

In a Young's double-slit experiment with light of wavelength

600\ \mathrm{nm}

, the upper slit is covered by a thin transparent sheet of thickness

6.0\ \mu\mathrm{m}

and refractive index

1.5

. What happens to the central bright fringe?

How hard are the questions?

From standard questions to a hardest tier: questions that join two ideas or hide a trap in the setting.